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Population density is population divided by total land area, sometimes including seas and oceans, as appropriate. [1] Low densities may cause an extinction vortex and further reduce fertility. This is called the Allee effect after the scientist who identified it. Examples of the causes of reduced fertility in low population densities are: [2]
Statistics Canada defines rural areas by their population counts. This has referred to the population living outside settlements of 1,000 or fewer inhabitants. The current definition states that census rural is the population outside settlements with fewer than 1,000 inhabitants and a population density below 400 people per square kilometre.
A population exhibiting a weak Allee effect will possess a reduced per capita growth rate (directly related to individual fitness of the population) at lower population density or size. However, even at this low population size or density, the population will always exhibit a positive per capita growth rate. Meanwhile, a population exhibiting a ...
Population density (people per km 2) by country This is a list of countries and dependencies ranked by population density , sorted by inhabitants per square kilometre or square mile . The list includes sovereign states and self-governing dependent territories based upon the ISO standard ISO 3166-1 .
Most of the exponential human population growth worldwide is occurring in or close to biodiversity hotspots. [6] This may explain why human population density accounts for 87.9% of the variation in numbers of threatened species across 114 countries, providing indisputable evidence that people play the largest role in decreasing biodiversity. [18]
While the term "rural" is contextual, it generally refers to a relatively low population density, a land-based economy (particularly agricultural), and a distinct regional identity. Some researchers have defined rurality as existing on a continuum. [1] A report estimates that in 2020, 43.85% of the world's population was living in rural areas. [2]
Since the city's population density is relatively low, and there is less artificial infrastructure throughout, the wilderness and environment have an opportunity to replenish themselves and react ...
Density-dependent mortality can be overcompensating, undercompensating or exactly compensating. [citation needed] There also exists density-independent inhibition, where other factors such as weather or environmental conditions and disturbances may affect a population's carrying capacity. [citation needed]